:checkhealth

offline, download from pypi $ pip3 install --user --no-index --find-links=file:/home/nnnn/.mypypi neovim

For windows

md \AppData\Local\nvim\autoload $uri = 'https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim' (New-Object Net.WebClient).DownloadFile( $uri, $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath( "\AppData\Local\nvim\autoload\plug.vim" ) )

.vimrc

set nocompatible
set ts=4
set sw=4
set et
set smartcase
syntax enable
set hidden
let mapleader = ","

" https://github.com/junegunn/vim-plug
" Manually installed plugins
set runtimepath^=~/.vim/bundle/nerdtree
    map <C-n> :NERDTreeToggle<CR>
set runtimepath^=~/.vim/bundle/tagbar
    nmap <F9> :TagbarToggle<CR>
set runtimepath^=~/.vim/bundle/vim-airline
set runtimepath^=~/.vim/bundle/vim-easymotion
set runtimepath^=~/.vim/bundle/vim-surround

" Automatic Plug
call plug#begin('~/AppData/Local/nvim/plugged')
Plug 'scrooloose/nerdtree'
    nmap <F9> :TagbarToggle<CR>
call plug#end()

set t_Co=256
let g:solarized_termtrans=1
let g:solarized_termcolors=256
set background=dark
colorscheme solarized

imap jkj <Esc>